First, you may wish to create your own specific image. In WordArt, you can easily create an image (such as DRAFT), upload it to an image-handling app, and save it as a .png file. Then it is a simple matter of adding it to your Excel worksheet as a Background Image.
To add your Background Image/Watermark, simply do the following:
- On the Toolbar, click on the Page Layout tab.
- Go to the Page Setup group on the ribbon and click Background
- Browse to the file in your computer or network, and double-click it
- Bamm! Your Watermark has been inserted!
This may take a few minutes to do this the first time, but the results are really quite effective. If you ever find the need to add a WATERMARK in your Excel worksheet, give it a try!